<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>

</head>
<body>
    <div id="app">
        <ul @click="() => list.reverse()">
            <li v-for="(item, index) in list" :key="index">{{item}}</li>
        </ul>
    </div>
    
<script>
  const { createApp, ref } = Vue

  createApp({
    setup() {
      const list = ref([1, 2, 3])
      return {
        list
      }
    }
  }).mount('#app')
</script>
</body>
</html>